Pug-mill and stone-separator.



' G. W. KILBORN. v PUGMILL AND STONE SEPAHATOR.

' APPLICATION FILED MAY 23,1910. 970,240.

Patented Sept. 13,1910.

2 BKEBT8BHEET 1.

G. W. KILBORN.

PUG MILL AND STONE SEPABATOR.

APPLICATION FILED H1223, 19 10.

, 2 SHEETS-SHEET 2.

3 n uc "to:

5 4oz we:

Patented Sept 13,1910

T all whom it may concern:

CHAUNGEY W. KILBORN, 0F ROSENHAYN, NEW JERSEY.

PUG-MILL AND STONE-SEPARATOR.

Specification of Letters Patent.

Application filed May 23. 1910. Serial No. $2.873.

Be it known that. I, CHAUNCEY \Y. Kn.- Bonx, eitizenuot the United States, residing at. ltosenhayn, in the county of Cumberland. and State of New Jersey. hare invented t'er tain newand useful improvements in lug- Mills and Si!)IlB-SOPHIHIOI'S. of which the following is a specifieation.

The present invention relates to a combined pug mill and stone separator, and has for its prunary object to provide a device of this character by means of which the desired homogeneity of the clay is attained by only one simple process between the clay as dug and the molding of the ware.

The invention further contemplates a pa;

.mill and stone. separator whieh is simple in its construction, which will operate in an effective manner to work the (:la and remove all stones and hard substances thereof while ina plastic eondition. and which eoni- ,fully appear as the description proceeds.

the novel features thereof being pointed out in the appended claims.

F01 a ftlll.lllltltll'fitallttltllg of the lllYtll' tioii reference is to be had to the following description and aeeompanying drawings. in which: i

Figure 1 is a longitudinal sectional view through a pug mill and stone extractor coustrueted in accordance with the invention. Fig. 2 is a transverse set-titmal view through the evlindrieal easing. Fig. 3 is a similar view through the frusto-t-miiral shell. nd Fig. 4 is a bottom plan view of the cylindrical pocket at the small end of the frusto-eonieal shell.

(jorrtsponding and like parts are referred to in the following description and indicated in all the views of the drawings by tile same. referenee eharm-ters.

Referring to the drawings. the numeral 1 designates a \'lllltll'lt':\l easing whit-h is at": ranged in a substantiallv horizontal po ition and whieh rommunieates at one 't-|ul tl.|ei'rof with ahopper 2 through \\'llltll thit-lay or other material to be noted upon is fed int the easing. "lheopposit end of the easing is open and t'ouummit-att-s with the largeend the center of thecylindrical easing l and the frusto-coniealshell 3 and has a more t applied thereto. the port ion of the eore within the frusto-eonieal shell being tapered toward the small end ofihe said shell. A

series of radial blades or knives 7 project ,trom the eore (I at that end of the tf \'lllltllltf:ll

easing l which receives thee-lay from the hopper 2. and these: blades 7 act upon the clay in the same. manner as the blades of Patented Sept. 13, 1910.

an ordinary pug mill to mix and work the 7 same. From these blades 7 the elay is fed to worm or Arehune lean sorew h which surrounds the core t'ratthe. opposite end of is tapered to corre pond with the same. The I edges ot this .\rehiiut.-dean t'l't\\' S preferably bear against the inner stllftl-Ttf of the easing and shell 3. and the. said shell I, is shown as adjustably mounted so that by tightening the. bolts J it ran be drawn against the screw. For this purpose the large end of the. frusto-eouieal shell 3 is formed with a llauge it) which telescopes over the end of the casing 1. both the said 'asing and the llange it) being provided with lugs for engagement with the-bolts 1).

The lower portion and sides of the frustoeonieal shell 3 are formed with a series of longitudinally disposed slots 32 through;

which the clay is forced by the action of the Archimedea-u screw 3. the stones and other solid partit-les being retained within the shell and tinally entering the cylindrical pot'liel l. The fineness of the finished prodthrough 'llit'll any clay still remaining with the stones may be expelled. The end of the cylindrical pocket 4 is normally closed by an .u 'i'wardlv swinging gate 16 having the lower suthcient pressure within the cylindrical pocket to force through the slots 15 any reinaining clay except that which fills the voids Should too much clay pass out with-the stones, a jet of steam or waterfmay be introduced through the pipes 20 into the small end of the frusto-conical shell and the adjacent end of the cylindrical pocket for the purpose of softening the clay.

This machine, as will be apparent from the foregoing is continuous in its actionand thoroughly works the clay and separates the stones therefrom in one simple operation;

Having thus described the invention, what I claim as new and desire to secure by Letters Patent, is:-- l

1. In a device of the charaetcr'described,

the combination of a frusto-conical shell having openings in the sides thereof, means.

for feeding plastic material into the large.

' end of the said shclha tapered worm mounted within the slicll and engaging the interior of the shell so as to act upon the plastic ina- I terial and force itthrough the openings, a

-pockc t communicating with the small end of the lrlisio-conical shell for receiving the solid particles which will not. pass through the openings ol the shell, the said pocket also having openings therein, alnl means for maintaining a sullicicni pressure within the having opcnings iii the sides thereof, means for l'ccdingplastic material into the large end of the said rlltll. a tapcrcd' worm mountcd within the shell and engaging the interior tlicrcof l'or acting upon the plastic niaicrial to lorco ll through thc. opcnings, a pocket 'communicating uith the small end of the h ll and designed to receive the solid partich-s which Ill not pass through the opcnings ol' the sin-ll, the said pnckct being also provid d with openings and being lorined with an opcn cud, an outwardly swinging' gate for the open end ol' the pocket, and nicans l'oi' normally holding the said gale yn-ldingly in a closed position.

3. In a device of the character described thc combination of a cylindrical casing, incans for I'm-din;- clay into one cnd of the ylindrical casing. a l'rnsto-conical shell having thc large cnd ihcrcol' applied to the flppnsllt cnd ol' ihc cylindrical casing, the said hcll havingopenings thcrcin, a worm cxtcndingthrough lhccyliiulrical casingand frnsto-conical shell and constructed to en gage the inner walls so as to act, upon the plastic material to force it through the cylin'drical' easing into the frusto-comcal shell and through the openings of the shell, and means atthe small end of the frusto-conical shell for collecting the solid particles.

4. In a device of the character described,

the. combination of a cylindrical casing,

means for feeding plastic material into one end o'fthe cylindrical casing,a frusto-conical shell having openings in the sidesthereof and having the large end thereof applied to the opposite end of the cylindrical casing, a worm passing through the cylindrical casing and irusto-conieal shell, the portion of the worm within the frusto-conical shell being tapered. to correspond with the, same, an adjustable connection between the frustoconical shell and the casing for holdin the shell in engagement with the edges 0 the worm, the said worm acting upon the plastic material to force it into the frusto-conical shell and through the openings thereof, and means at the small end of the frusto-conical shell for collecting the solid particles,

In a device of the character described, the combination of a cylindrical casing,

means for feeding clay into one end of the casing, a friisto-eonical shell formed with openings in the sides thereof and having the large end thereof applied to the opposite end 5 the cylindrical casing, a shaft, extending through the cylindrical casing and shell, a

series of arms carried by the shall at that end of the cylindrical casing where the plastic material enters the same, a worm carried by the shaft. and arranged within the opposite end of the cylindrical casing and the l'rusto-conical shell, the said' worm receiving the plastic material after it has been acted upon by the before mentioned arms and serving to force the plastic niatcrial into the frusto-conical shell and th'roughithe openings therein, and means at the small end of the frusto-conical shell for collecting the solid particles. 7

6. in a dcviceof the character described, the combination of a cylindrical easing, means for feeding clay into one end of the casing, a frusto-conical ,shell formed with openings in the sides thereof and having llnlarge cnd lhcrwlapplicd to the opposite end of the cylindrical casing, a shaft cxicnding through the cylindri'al casing and shell, a series of arms carried by the shaft at that cinl ol' the c \'lindrical casing where the plastic material enters the same, a worm carricd by tho sha it and arranged within the opposite end ol the cylindrical asing and the l'rustowonical shell, the said worm rccciving the plastic material a t'tcr it has been acted upon by the-before mentioned al'ins and serving to force the plastic material into thc l'rnsto conical shell and through the Openings therein, and a pocket at the small end of the frnslo-conical shell within whirl) llw solid parliclvs are CUlllClOll- 7. In a flQVlf'C 0f the character (lvscribml. 5

the. combination of a cylindrical musing,

means for feeding clay into one end o'l' the casing, a frnsln-cnnical shell fm-mc-d,\\-itl1 openings in the sides thorvof and having Um. large mu] (hm-00f appliml ln tlnnppns -w end of lhe qvhmlriral casing. a shall vxlmnl' in; through the \'lin lri -al vasin" and shvlL a Hvl'lvs of arms varrlml by llw shall all that will nl' lln \'lnnlri -al casing \rln'rv lln' plastlr nnm-rial (lll'Cl'S tho samr; a worm married hytho shaft and arranged within the. oplmsllv 0nd of thv ryhmlrn'ai vasung I and the frnslu-conical shell, the Fairl worm 7 rw'civlng the plaativ material al'lor it has 

